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l. LARSEN.

WIRE FEEDING MECHANISM.

APPLICATION Hugo IULY 5. ms.

Patented Se t. 16, 1919.

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- Patented 36 5516, 1919.

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I. LARSEN.

WIRE FEEDING MECHANISM.

APPLICATION FILED JULY 5, I916.

Patented Sept. 16, 1919.

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IVERT LARSEN, OF CHICAGO, ILLINOISpASSIGNOR TO SMITH MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS, A (DRIPOR.A. .l3-Il'. 0'1\l' OF ILLINOIS.

WIRE-FEEDING MECHANISM.

Specification of Letters Patent. 7 Patented Sept 16, 191};

Original application filed November 13, 1915, SeriaiNo 61,299. Divided and this application filed July 5, 1916. Serial No. "107,716.

To all whom it may concern: Be it known that I, Ivnnr LARSEN, a cit zen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Wire-Feeding Mechanism, of which the following is aspecification.

This invention relates particularly to wirefeedin mechanism and finds. a particularly useful application to wire-feeding mechanism for buttonsetting machines. A button-setting machine of the character here referred to has provision for feeding a wire through the button I, severing the wire, forming a staple, and attaching a button by means of such staple to fabric or leather. Such machines are commonly used for applying buttons -to shoes.

The present application constitutesa d1- vision of my application Serial No. 61,299, filed November 13, 1915. The primary object of the present invention is to provide wire-feeding mechanism of simple and improved construction. a a I The invention is illustrated in its preferred embodiment in the accompanying drawings, in which Figure 1 representsa side elevational View of the upper portion of a button-settingmachine, having my improved wire -.feeding mechanism applied thereto; Fig. 2, a sectional view parallel with the axes of the wire-feedings rolls, the section being taken as indicated at line 20f Fig. 3; .F1g.3,-a broken front-elev'ational view of the mechanism shown in Fig. 1; Fig. 4;, a broken rear view of the wire-feeding mechanism;,Fig. 5, a View partly in plan and partly in section, illustrating the manner inwhich the wire is fed into position with relationto a depressible staple-former which co-acts with a reciprocating wire-severing and stapleforming plunger and an associatedstapledriving plunger; Fig. 6, a broken sectional 'view similar to Fig. 5 and illustrating the staple-clenching operation; and Fig. 7, r a broken vertical section showingthe tubular standard of the machine and thereciprocatingconnecting-rod therein.

In the construction illustrated, A represents a tubular standard mountedon a base A and surmounted by a top-platen. A3, a irame-member'or mechanism-mounting carried by the plate A and provided with an anvil A and an inclined plunger-guide A in which reciprocate the slidably-rela'ted wire-severing and staple-forming plunger and the staple-driving plunger; A, a button escapement-device mounted on the re movable top-section of the guide A; B, a wire-severing and staple-forming plunger which moves in the guide A C, a stapledriving plunger which is slidably connected with the plunger B and confined therewith in the guide A D,a depressible staple- :Eorming male-member, or post, about which the staple is formed after the wire is severed, the ,post D "being depressed'out of the Way of the plungers after the staple has been formed; E, a button-chute adapted to ac commodatebuttons and conduct same from the hopper to the button-setting mechanism; F, a vertically-movable actuating plunger or connecting-rod movable through the hollow standard A and actuated by a foot-lever F;

G, a tubular rock-member mounted on a stud or bolt 1.'carried by a lug or post l with upper portionof the connecting-rod F, havmg also an arm 1 adapted to co-act with the lower end of the depressible staple-forming post D and having also a roller-equipped cam-arm 5 adaptedto actuate therock-arm or' lever which actuates the wire-severing and staple-forming plunger and having also an arm or elbow 6 whichhas pin-and-s'l'ot connection 7 with a link8 adapted to actuate the rock-shaft which serves to actuate the 'staple-dr'ivingplunger and the arm which actuates the button-feeding mechanism with which the hopper is equipped; H, a rockshaft m'ountedin rearward'ly-extending furcations or arms 9 with which the rear upper portion of the guide A is equipped, the rock-shaft H having fixedly mounted'thereon.a.lever H which affords an actuating .arm 11 with. which the .upper end of the link '8 is joinedby a pivot 12, and which aflordsalso a cam-arm 13 whose upper end isequipped with a cam-roller 14 adapted to actuate the staple-driving plunger C; H an arm fixedly secured to one end of the rock-shaft H and serving to actuatethe buttonrfeeding mechanism (not shown) through .themediumof links H and H; I, a rock; lever .rotatablymounted on the shaft H and provided with an actuating-arm equipped with a cam 15 adapted to be actuated in the wire-severing and staple-forming operation by the cam-arm 5, the rock'lever I having also an arm 16 connected by a link 17 to the rear upper end of the wire-severing and staple-forming plunger B; J, a button-hopper provided with button-feedin mechanism (not shown) which is actuate through the mediums of the links H and H and which serves to deliver buttons to the chute E; K, wire-feeding mechanism mounted on the frame-member A through the medium of a bracket 18; and L, a wire-reel carried by a post L mounted on the plate A It is unnecessary to describe the various mechanisms in detail. The general operation of the machine may be stated, however. In the normal position of the parts, the roller of the cam-arm 5 is substantially in engagement with the camarm 15 of the rock-lever I. The first action in the cycle of operation of the machine is that of feeding the wire through the medium of themechanism L, this action being caused by the first movement of the connecting-rod F in a manner to be presently described. During the wire-feeding action, the rock-lever G remains idle, owing to the stud-and-slot connection 3. Then the member G is rotated, bringing the cam-arm 5 into action and turning the rock-lever I through the medium of the cam-arm 15, the rock-shaft H, in the meantime, remaining idle, owing to the pin-and-slot connection 7. In this action, the wire-severing and stapleforming plunger B is operated, thereby severing the wire in a manner which will be understood from Fig. 5, and bending the wire over the former D to form the staple. Subsequently, the rock-shaft H is rotated, and through the medium of the rock-lever H, which is rigid with the shaft H, the staple-driving plunger C is caused to perform its working stroke.

The wire-feeding mechanism L, as has been stated, is mounted on the bracket 18, which projects laterally from one side of the frame-member A as shown in Fig. 3. The bracket 18 carries an adjustably-secured shaft 19, upon the front end of which is journaled the lower feed-roll 20, which has formed integrally therewith a pinion 21, which meshes with a similar pinion formed integrally with the feed-roll 22, journaled on the front end of a bar or shaft 23 whose rear end is connected with the bracket 18 by a pivot 24. The upper feed-roll is yieldingly held in a depressed position by a spring 25, but may be lifted by a rock-shaft or eccentric 26 equipped with a handle 27. A pawl-carrying yoke 28 is journaled on the shaft 19,

this yoke being equipped with a pawl 29 adapted to actuate the pinion 21 in the direction indicated by the arrow in F 1g. 3, when the yoke 28 is swung outwardly away from the connecting-rod F. In the return movement, the pawl works idly over the pinion. The yoke 28 is equipped with a short arm on which is journaled a cam-roller 30 adapted to engage a semi-circular cam-recess 31 formed in the outer side of the connectingrod F. The rear end of the shaft 19 is equipped with a coil-spring 32, one end of which is secured to the shaft and the other end of which is connected, by a screw 33, with the yoke 28. The shaft 19 hasathreaded portion equipped with a lock-nut 34 between which and a shoulder on the shaft 19 is confined a lug of the bracket 18, through which the shaft 19 extends. The shaft 19 may be turned to adjust the tension of the spring 32, and then secured in adjusted position by the lock-nut 34. The spring 32 tends to return the feed-roll actuating yoke 28 to the position shown in Fig. 3, in which the camroll 30 engages the recess 31. l/Vhen the plunger F starts on the down stroke, the cam recess 31 causes the member 28 to swing outwardly, thereby actuating the feed-rolls through the medium of the pawl 29. After the wire is fed, the cam-roll 30 works on the outer vertical surface of the connecting-rod F above the recess 31. Thus, the member 28 is held in the outwardly-swung position until the connecting-rod F rises, when the spring 32 forces the cam-roller into engagement with the cam-recess 31. This operation is effected, notwithstanding the fact that the upper end of the connecting-rod F is swung forwardly and rearwardly somewhat, owing to its connection with the rock-lever G which turns about the pivot 1. In the wire-feeding operation, the movement of the rock-member, or yoke, 28, is snflicient to feed the wire somewhat more than the required distance, it being understood that the feed-rolls will slip on the wire after the wire has been fed the required distance.

The wire 35 passes from the feed-rolls through an adjustable guide 36 in the manner shown in- Fig, 5. The member 26 is a hardened steel member whose inner end serves as a shearing shoulder which co-acts with a shear 37 carried by the Wire severing and staple-forming plunger B. When the wire is fed to the staple-forming position, the inner end impinges against an adjustable stop 38. The furcations of the staple-forming plunger B are provided at their inner sides with grooves 39 which accommodate the legs of the staple as the staple is formed about the former D. It will be understood that before the Wire is fed to the position shown in Fig. 5, a button is deposited with its eye entered in the socket 40 of the former D so that the wire will be fed through the eye of the button. In the operation of clenching the staple, the button and staple are carried to the anvil A*, the former D being depressed out of the way of the plungers,

' application.

nection 3. After the wire has been fed, the

wire-severing and staple-forming plungers are actuated, 1n proper sequence, through the medium of the rock-member G. The

passage of the buttons from the chute E to the former D is controlled by the escapement A, a detailed description of which is unnecessary in connection with the present The foregoing detailed description has been given for clearness of understanding only, and no unnecessary limitation should be understood therefrom, but the appended claim should be construed as broadly as permissible in view of the prior art.

lVhat I regard as new and desire to secure by Letters Patent is:

The combination with a reciprocating connecting-rod equipped with a cam, of wirefeeding mechanism comprising a framemember, a shaft rotatably adjustable in said frame-member, a rock-member journaled on said shaft and equipped with a cam-arm, a spring having one end secured to said shaft and the other end connected with said rock-member, said spring serving to hold said rock-arm in connection with said connecting-rod, a pawl carried by said rock-member, a feed-roll equipped with a pinion engaglng said pawl, and a companion feed-roll equipped with a pinion engaging said first-named pinion. V

IVERT LARSEN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

